I was in Gainesville this past weekend and a buddy introduced me to Backyard Burger. For a burger chain, I liked what they had to offer. I believe the meat is Black Angus beef but they are a bit pricey, right around the $3 mark if not more. My buddy was treating so I don't recall the exact price. My buddy ordered a couple extra to go so he could take some home to Tampa to give to his girlfriend.
Looking at their website, looks like they are in the Orlando area as well, I hope that they come to Tampa at some point.